Find the product. (6x2 + 8)(3x2 – 5x + 7)
o 4234 – 70x3 + 98x
18x4 – 30x3 +66x2
40x + 56
O 18x4 – 30x3 + 42.2 + 8
O 18x4 + 36x2
402 + 56
Answer:
18x^4 – 30x³ +66x²- 40x + 56
Step-by-step explanation:
What is the line of reflection?
Answer:
Y Axis
Step-by-step explanation:
The y axis is the best so it reflects off of both sides of the best axis in the world.
change 8.2m into mm!!’
Answer:
8200mm
Step-by-step explanation:
Answer:
8200
Step-by-step explanation:
All you have to do is take 8.2 meters and multiply it by 100 and get 8200.
What is 234475 x 45678 =?
g-6, where g = 29 pls
Step-by-step explanation:
g-6, where g = 29
=29-6=23
Which of the following sets of values correctly completes the t-chart for the equation y = 2x2 - 1. image below
Answer:
y=3
Step-by-step explanation:
you times 2 and 2 together and it give you 4
Help me and you get 100 points and Brainliest
The table shows the test scores and the sleep averages of several students.
a. Write the least squares regression equation that models the data. Let x = hours of sleep and y = test score.
b. Use the equation to determine the approximate test score of a student who sleeps an average of 8 h a night. Show your work.
hey someone else has already answered this!
a. To find the least squares regression equation for a group of (x,y) points:
Step 1: For each point(x,y), we need to calculate x² and xy first.
Step 2: Sum all x, y, x² and xy, which gives us Σx, Σy, Σx² and Σxy
Step 3: Calculate Slope m: m = (NΣxy − Σx Σy)/ N(Σx²) − (Σx)² , here N is the number of data.
Step 4: Calculate Intercept b: b = Σy − m(Σx)/ N
Step 5: Assemble the equation as y= mx+b
Here, we have ∑x = 120, ∑y= 1379, ∑x²= 919.5, ∑xy= 10466 and N= 16
So, m= (NΣxy − Σx Σy)/ N(Σx²) − (Σx)²
=
=
=
= 6.33
and b = Σy − m(Σx)/ N
=
=
=
= 38.71
So, the least squares regression equation is : y= mx+b ⇒ y= 6.33x +38.71
b. When x= 8, then y= (6.33×8)+38.71 = 50.64 + 38.71 =89.35
The approximate test score of a student who sleeps an average of 8 h a night is 89.35%
EVERYTHING IS FROM sicista on brainly!
Answer:
A way to write the least regression equation that models is data y = mx + b => y= 6.33x + 38.71 and as for problem B when X = 8 then y = (6.33 x 8) + 38.71 = 50.64 = 38.71 = 89.35 so the estimated test score of a student who sleeps eight hours a night is equal to 89.39%
Step-by-step explanation:
Charlie runs laps around a track. The table shows how long it takes him to run different numbers of laps. How long would it take Charlie to run 7 laps? Numbers 2 4 6 8 10. Time 18 36 54 72 90
Answer:
42
Step-by-step explanation:
Answer:
63
Step-by-step explanation:
find one lap
2/2=1
18/2=9
1 lap = 9
1·7=7
9·7=63
pq=3-a√x
make x the subject
Step-by-step explanation:
pq = 3 - a√x
Making x subject
a√x = 3 - pq
√x = (3 - pq) / a
x = [ (3 - pq) /a ]²
Hope it will help :)
Help!!!!!!!!!!!!!!!!!!!!!
i dont know functions
Answer:
6, -8
Step-by-step explanation:
You need to find out the possible values of which X cannot equal
In fractions the only way that's possible is if the denominator= 0
Because everything in the denominator is being mulitplied this is pretty simple
We need either parantheses to equal 0
so we take them and solve for 0
we have
x-6= 0
x=6
x+8=0
x= -8
Simplify the expression so there is only one positive power for the base, -5.
IT'S A TEST ILL GIVE BRAINLIEST!!!
Which of the following is the set of the second coordinates
A. Domain
B. Range
C. Function
D. Exponent
What is the solution set of –|x| = –8?
{8}
{–8}
{–8, 8}
no solution
Answer:
its c -8,8
Step-by-step explanation:
A rectangular flower garden has a length that is 3-feet greater than its width. If the flower garden is surrounded by a 1 foot wide concrete path, write a quadratic equation that represents this situation.
Please help asap!!!!
Answer:
1) Area = 12cm²
2) x = 5cm
Surface area : 69cm²
Step-by-step explanation:
Opposites sides in a rectangle would equal the same.
so Top/bottom = 20+20=40
Front/back = 15+15=30
40+30=70cm²
94-70=24cm² for left and right side 24÷2=12cm²
2) Those lines represents what side it is equal too which also means the same.
3cm, you know that base x height = surface area so surface area ÷ height = base
15/3=5cm
x=5cm
Formula : Base x Height = One surface area
Front/Back= 15+15=30
Top/bottom = 5x3 = 15+15=30
side/side = 3x3=9
30+30+9=69cm²
what is the slope formula?
NEED HELP PLZ
Answer:
y = mx + b
Step-by-step explanation:
Answer:
slope formula is y=mx+b
In fraction form EMoDetective
Answer:
what do u mean?
Step-by-step explanation:
Evaluate 2x+3 when x = 1
Answer:
5
Step-by-step explanation:
Plug 1 into the x.
So 2(1)+3
2+3
5 is your final answer.
This a morning work and I don't get when they say "Area of a triangle" I'm still working on it, but Im just so confused. Can you help?
Answer:(b) 100^2in
Step-by-step explanation: Well 1st area means inside so they wanted you to find the inside, and well the answer is 100 hope it helped :)
2x4yz² find the degree
The degree is 2
Hope it helps
Months, x
1
2
3
4
5
# of people, y
18
36
72
144
288
I) Write an exponential function to model the number of people using a social media outlet after x months.
II) Using your formula above, predict the number of people using a social media outlet after 6 months.
es aquel que esta conformado por la totalidad de elementos en estudio
An item cost dollars. If the price of the item increases by 11%, tue new price can be represented by the expression +.11 write a new expression
two coins are tossed at the same time. what is the probability they both land on tails?
Answer:
1/3
Step-by-step explanation:
Answer:
Step-by-step explanation:
30%
First answer gets brainliest:
Answer:
5.5
Step-by-step explanation:
100-34 = 66
66/12 = 5.5
Sadie had 55 stickers. Each day she gave away 5 stickers to her friends.
Write an equation to model this situation in the form y = mx + b, but do not
include any spaces in your answers. (for example y=6x+1)
Answer:
55 = 5x
Step-by-step explanation:
Sadie had 55 stickers. Each day she gave away 5 stickers to her friends.
Write an equation to model this situation in the form y = mx + b, but do not
include any spaces in your answers. (for example y=6x+1)
Equation to model this situation in the form y = mx + b,
y = Total number of stickers she had
x = Number of days that she gave away sticker
b = Fixed value = 0
Hence:
55 = 5x + b
b = Fixed value = 0
Therefore, the situation is represented as:
55 = 5x
find the missing length of 26cm 10cm of the right triangle
Answer:
24cm
Step-by-step explanation:
A^2 + B^2 = C^2 soo 10^ + B^ = 26^2 so 100 + B^2 = 676 subtract 100 from 676. Then take the square root of 576 and you’ll get 24. So B = 24cm
4y square + y - 45 when y=-5
Given:
The expression is
[tex]4y^2+y-45[/tex]
To find:
The value of the given expression when y=-5.
Solution:
We have,
[tex]4y^2+y-45[/tex]
Putting y=-5, we get
[tex]4(-5)^2+(-5)-45[/tex]
[tex]=4(25)-5-45[/tex]
[tex]=100-50[/tex]
[tex]=50[/tex]
Therefore, the value of the given expression is 50 when y=-5.
2 [(3x + 1) – (2 - x)
Answer:
How come their is only one bracket in the equation
Step-by-step explanation:
Answer:
5x + 2
Step-by-step explanation:
2 (3x + 1) - (2 - x)
simplify (use the distributive proprty)
6x + 2 - x
simplify some more
5x + 2
Thats it